CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Ke Wang,Wei Gao
Preventing the catastrophic propagation of thermal runaway within battery modules remains a critical challenge for battery safety. This study introduces a novel protective method that integrates a flame-retardant aerogel fiber felt thermal barrier KGSA with a self-extinguishing phase change composite SMEP to achieve superior thermal runaway suppression. Thermal runaway was triggered at different module locations to systematically evaluate the performance of these materials individually and in combination. When thermal runaway was triggered at the first cell (cell1), using SMEP alone delayed propagation (133.42 s, 243.10 s) but ultimately failed to prevent it. Either a standalone 3 mm KGSA barrier or its integration with SMEP in a sandwich configuration completely blocked thermal runaway propagation under cell1 triggering. For non-first cell trigging, which exhibited higher heat release rates, the combination of 2 mm KGSA and 1 mm SMEP delayed propagation (752.10 s, 664.12 s) without achieving full suppression. However, increasing the SMEP thickness to 1.5 mm within the composite system effectively mitigated thermal runaway across all triggering conditions. Combining thermal runaway behavior, combustion behavior, and the microstructure of materials after thermal runaway, the thermal runaway suppression mechanism of physical heat blocking and heat absorption was proposed, providing a novel strategy for battery safety design.
✓ 已验证
产品关联
DOI
高影响因子
Cell Reports Physical Science
·
2025
·
IF 7.3
Fan Wu,Yukun Ma,Lijing Fan,Shaohua Chen,Jieyi Shen,Yanxin Chen,Pengxin Liu
Hydrogen peroxide (H 2 O 2 ) is a versatile and environmentally friendly oxidant whose industrial production has potentially more sustainable routes. Photocatalyzed H 2 O 2 generation represents a mild and efficient alternative, utilizing solar energy to reduce oxygen. However, how the photooxidation half reactions of hole scavengers affect the overall catalytic performances is largely overlooked. Here, we report that photooxidation half reactions are the real rate-limiting steps and that the choice of hole scavengers vitally affects the overall production rate of H 2 O 2 . The H 2 O 2 formation kinetic constants for 12 hole scavengers are compared with their electrooxidation potentials, calculated orbital energies, and energy gaps. No general correlation is found. Several possibilities are proposed, including the influences of different surface adsorption and surface reaction pathways. Our finding suggests that in practice, it is difficult to choose the right half reaction based on intuition or experiences with other systems. A case-by-case study is needed.
✓ 已验证
产品关联
DOI
高影响因子
MethodsX
·
2025
·
IF 1.9
Dongdong Zhu,Su Mei Liu,Aude Leynaert,Paul Tréguer,Morgane Gallinari,Heting Zhou,Jill N. Sutton
This study describes a wet chemical extraction protocol for measuring the biogenic silica (bSi) in sediments from diverse marine environments. The protocol lists the reagents, materials, equipment, and sample preparation procedures, and provides a detailed explanation of the methods for examining the alkaline-leachable silicon (Si), and calculating bSi content. Although, the protocol was primarily developed for measuring bSi in sediments from the Chinese marginal seas, it was also validated using sediments from the Chesapeake Bay, the Atlantic Ocean, and the Southern Ocean. The protocol can be used to quantify bSi in recently deposited and aged sediments from the Holocene period. The protocol contributes to the ongoing efforts to minimize the methodological bias that exist in bSi quantification and the bSi burial flux evaluation, thereby assisting in our understanding of Si cycling in the modern ocean. • This protocol provides a step-by-step wet chemical extraction procedures and the measurement of dissolved Si in an alkaline solution using spectrophotometer. • This protocol is easy to set up and reproduce, and determines bSi content with high precision. • The protocol can be used to determine bSi in sediments of marginal seas and the open ocean.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEDICINAL CHEMISTRY
·
2025
·
IF 6.8
Tingting Liu,Xingyue Chen,Shah Nawaz Khan,Xiaoxu Li,Bo Kong,Yingjun Zhou,Yangyan Li,Yuhua Ge,Gang Chen,Xu Deng
Primary and acquired oxaliplatin (OXA)-resistance remains a major challenge in colorectal cancer (CRC) therapy. In this work, the type-II strigolactam SL 39 was identified as a promising lead compound against OXA-resistant HCT116R cells. Co-treatment of SL 39 with OXA restored its sensitivity to HCT116R cells and inhibited xenograft tumor growth. Mechanistically, SL 39-treatment specifically blocked the autophagosome–lysosome fusion in HCT116R cells without altering lysosomal pH, leading to induction of mitochondrial dysfunctions and lethal accumulation of reactive oxygen species. Additionally, SL 39 also markedly increased lipid peroxidation and suppressed the SLC7A11/GPX4 axis to trigger ferroptosis in HCT116R cells. Combining SL 39 with OXA delivered a one-two punch: OXA causes DNA damage and oxidative stress, while SL 39 prevents stress resolution─shifting resistant cells toward ferroptotic death. These findings establish that SL 39 blocks late-stage autophagy to tip the metabolic balance toward ferroptosis in chemoresistant CRC, which offers a novel approach to overcome late-stage treatment failure.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Jia Guo,Yongqi Zhao,Junjie Jiang,Xiaolong Liu,Yongqiang Wang,Huazhen Chang,Tingyu Zhu
Selective catalytic reduction (SCR) with ammonia (NH 3 ) is an established method for NO x elimination. However, the catalytic activity of conventional VW/Ti catalysts declines sharply at ultra-high temperatures (above 700 °C). To address this limitation, this study employed machine learning (ML) to optimize high-temperature SCR catalysts. A gradient boosting decision tree (GBDT) model with Shapley Additive Explanations (SHAP) identified calcination temperature, crystal phase, and surface acidity as the key factors influencing catalytic performance. Based on these insights, a designstrategy was developed for VW/Ti catalysts under ultra-high temperature conditions and successfully identified a catalyst exhibiting excellent resistance to high-temperature degradation through evaluation and characterization. Experimental validation confirmed that Si doping significantly improves catalytic activity and thermal stability, with the VW/5Ti1Si-800 catalyst demonstrating superior performance. This study highlights the effectiveness of combining ML and experimental approaches to mitigate high-temperature deactivation in SCR catalysts.
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2024
·Vol. 26
·期 12
·7246-7257
·
IF 9.3
Ruying Yang,Nengwu Zhu,Yunhao Xi,Sunjuanzi Gao,Pingxiao Wu,Zhi Dang
With the rise in installed capacity of photovoltaic systems, the growing generation of waste crystalline silicon solar cells has become an important issue. Silicon is one of the most valuable materials in cells; recyclable treatments with green techniques must be developed for it. A new strategy for the recovery of silicon wafers has been proposed using choline chloride and oxalic acid-based deep eutectic solvent–hydrogen peroxide (DES–H2O2) aqueous solution systems. With the synergistic effect of DES and H2O2, the leaching efficiency of silver from cells reached 89.19%, along with complete aluminum leaching. Compared with only the DES control, the leaching efficiency of silver was enhanced by as high as 97.45%. Subsequently, reusable silicon wafers were obtained with 97.47 wt% surface purity, and 99.41% of silicon retention rate (169 μm) after removing Si3N4. Favorable results were mainly attributed to the higher concentration of H+ due to a boost by oxalic acid-based DES compared to concentrations in an oxalic acid aqueous solution, which could provide stronger oxidizing power, and besides, lower oxidation activation energy for silver in H2O2. In this work, high-purity silicon wafers were obtained with high leaching efficiency of metals in a short time (2 h) at a low temperature (80 °C) without using strong acids; among solvents, the DES showed great potential for reuse. It is concluded that the DES–H2O2 aqueous solution system provides an environmentally friendly process for green and nearly lossless recovery of silicon wafers from silicon solar cells.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Zian Huang,Mingming Zhang,Weiqiang Zhou,Danqin Li,Yize Li,Xiaojing Hao,Jingkun Xu
The simplified manufacturing of high-performance flexible all-solid-state supercapacitors (FASCs) is of great significance for the vigorous development of flexible electronic devices. Herein, we develop a simple freezing/thawing technology to directly assemble an asymmetric FASCs without additional membrane consisting of polypyrrole@WO 3 (PPy@WO 3 ) nanowire arrays, MnO 2 nanosheet arrays and all-solid-state LiCI/PVA hydrogel, in which PPy@WO 3 nanowire arrays as anode material is prepared by in-situ hydrothermal and following electrodeposition methods. The electrodeposited PPy is confirmed to tightly wrap around the surface of WO 3 nanowire arrays, forming three-dimensional core-shell PPy@WO 3 with high specific capacitance of 1872 mF cm −2 at 10 mA cm −2 and excellent stability. As-assembled asymmetric FASCs demonstrate a high volumetric energy density of 6.5 mWh cm −3 and a wide voltage window of 2.4 V. In addition, as-prepared FASCs shows a 100 % capacitance retention after 500 bending cycles. The one-step assembled hydrogel-based FASC using a simple and low-cost freezing/thawing method has the advantages of high energy density and flexibility, making it a promising flexible energy storage device.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Lanlan Liang,Peike Cao,Haokun Bai,Xiaojun Du,Shuo Chen,Hongtao Yu,Yanming Liu,Yan Su,Xie Quan
The decontamination performance of heterogeneous catalytic ozonation catalysts is limited due to low electron transfer between active sites and O 3 . Herein, we modulated the electronic state of metal sites by coating copper oxides on hollow carbon (CuO x -HNC) with different spherical curvatures. CuO x -HNC with larger curvature exhibited more hydroxyl radical generation and higher degradation performance of sulfamethoxazole, achieving 60 % mineralization efficiency within 90 min. Experimental and theoretical results revealed that high curvature of hollow carbon induced a shift of π-electron density from concave to convex forming electron-rich exterior surface, which strengthened orbital overlap between Cu 3d and O 2p, consequently accelerating the electron transfer from Cu to O 3 . CuO x -HNC exhibited efficient decontamination performance for pharmaceutical wastewater in a continuous-flow reactor with COD reducing from 105 mg L −1 to below 50 mg L −1 . This study offered a valuable strategy to modify the electronic structure of catalysts for efficient wastewater decontamination.
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Qi Li,Sihan Tang,Ruiying Luo,Peng Wei,Peng Chen,Jianlong Cong,Guizhou Liu,Zhufeng Liu,Yizhong Gou,Hongzhi Wu,Shixiong Sun,Jiantao Han,Yusheng Shi,Chun Fang,Chunze Yan
Aqueous rechargeable zinc-ion batteries (ZIBs) have attracted much attention due to high safety, fast charge/discharge rate, low cost and direct utilization of zinc metal anodes. Zn powder (Zn-P) -based anodes are considered as ideal candidates for Zn-based batteries owing to their positive synergistic integration of safety and energy density through the design of the N/P ratio. However, Zn-P anodes still experience easy corrosion, hydrogen evolution and uncontrolled dendrite growth, which restrict their further application. Herein, we rationally introduce a hydrophilic polymer with multiple hydrogen bond acceptor sites to Zn-P anode to prepare a novel poly(ethylene glycol) diacrylate (PEGDA) modified Zn powder (Zn-PD) anode. By anchoring water molecules through multiple hydrogen bonds, the solvation structure of Zn 2+ is modulated, and the electrochemical activity of free water at the interface is reduced, which inhibits Zn corrosion and hydrogen evolution.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xiang Li,Ting Wu,Yawei Zhu,Qingwen Tian,Qiang Yang,Guigan Fang
Photocracking of lignin β–O–4 bonds is a green approach for the high-value modification of lignin. Graphitic carbon nitride (g-C 3 N 4 ) that can photocleave the β–O–4 bond is presently the only stable, metal-free photocatalyst owing to the residual metal ions generated due to photocorrosion of metal sulfides. Herein, g-C 3 N 4 with a N–C 3 vacancy structure is prepared by etching site–engineering strategy based on the protection of C–N=C structure by chlorine atom. The N–C 3 vacancy structure can reduce the transport path of the photogenerated electrons by tuning the conduction band (CB) region to the edge of the photocatalyst, which impedes the critical complexation of the photogenerated electron–hole pairs and enhances the photoelectric conversion efficiency five-fold. Combined with the unique chemisorption capacity (137.82 kJ/mol) of N–C 3 vacancies for oxygen, the g-C 3 N 4 photocatalysts with N–C 3 vacancy structure can generate 9.6-fold higher superoxide radicals and 13-fold higher lignin β–O–4 bond photocleavage efficiency lignin compared with untreated g-C 3 N 4 . Based on the reaction enthalpy changes and free energies investigated through simulations, a route of lignin C α –C β bonds being oxidized and dehydrogenated twice by photogenerated cavities is proposed for the first time. This work reveals the relation between the properties of g-C 3 N 4 and the photocleavage efficiency of lignin β–O–4 bonds.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiawei Mu,Miao Yu,Bo Zhao,Yan Dai,Tiantian Li,Xiangcun Li,Xinhong Qi,Xuri Wang,Gaohong He
Optimizing Zn 2+ dispersion and regulating Zn 2+ deposition is a key issue in the aqueous Zn-ion anodes. Herein, the flexible membrane (CNT/PAN/Ag) with uniformly interwoven pores was facilely fabricated by one-step phase inversion method. The complex woven pore structure can effectively disperse the flow of Zn 2+ , reduce current density of nucleation sites, and avoid the aggregated deposition of Zn 2+ . Furthermore, the scalable Janus membrane with different affinities to electrolyte on the two sides can be designed based on the membrane surface structure. The high wettability of the upper surface of the membrane with electrolyte facilitates rapid transfer of Zn 2+ flux into the membrane for redispersion, and low wettability of the back surface is benefit to isolate electrolyte from surface of the zinc anode and to avoid side reactions brought about by the aqueous electrolyte. Meanwhile, by virtue of the high adsorption energy with Zn 2+ , the doped Ag active sites in the membrane further extend the dispersion path of Zn 2+ within the membrane and induce portion of Zn 2+ to be deposited within the membrane, balancing and reducing current density at the deposition interface. In the galvanostatic current test of the symmetric battery at 1 mA cm −2 , 0.5 mAh cm −2 , the battery can be stably cycled more than 1000 h, the specific capacity of pouch cell with NH 4 V 4 O 10 reserved 384 mA h/g at 5 Ag −1 after 95 cycles. The work presents a new flexible membrane design for solving the Zn dendrites in aqueous zinc ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Chaohui Guan,Jiefei Li,Tao Chen,Liang Lv,Junfeng Du,Shuai Zhang,Hang Wei,Haibin Chu
Developing high performance catalytic materials for the electro-oxidation of glycerol into specific value-added products is essential for glycerol valorization. Herein, we used the sol–gel method to coat the TiO2 layer with adjustable thickness on the surface of carbon nanotubes (CNTs), obtaining a unique morphology of porous sheath TiO2 wrapped CNTs (TiO2/CNTs). Subsequently, Pt nanoparticles were loaded onto TiO2/CNTs using the ethylene glycol reduction method. The prepared Pt–TiO2/CNTs catalyst achieves a glycerol conversion near 100% at 0.8 V vs. RHE and 60 °C for 10 h. Notably, the selectivity of tartronate reaches 52.5% after 24 h. Characterization results reveal that the dispersed Pt nanoparticles are embedded into the holes of the TiO2 porous sheath, fabricating abundant Pt–TiO2–CNT interface structures. The infusion of TiO2 shifts the center of the d-band upwards, and enhances the adsorption of the glycerate intermediate on Pt particles, which facilitates the further oxidation of glycerate to tartronate. This simple and efficient morphology control method provides a new strategy for glycerol valorization via electrocatalysis.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）